nav ul{
    width: 100%;
    justify-content: space-around;
}

.row1 img{
    width: 100%;
    height: 100%;
}

.row2 .btn,.row2 ul{
    flex-wrap: wrap;
    justify-content: flex-start;
}
.row2 ul li{
    width: 30%;
    margin: 10px;
}
.row2 ul li p{
    margin: 0 auto;
}
.row2 .btn a{
    margin: 20px auto;
}
.row3 ul{
    flex-wrap: wrap;
    padding: 0 20px;
}

.row3 ul li img{
    width: 100%;
}
.row3 ul li{
    width: 300px;

}







